US PATENT SUBCLASS 473 / 233
.~.~.~.~ Swing speed indicator

Current as of: June, 1999
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473 /   HD   GAMES USING TANGIBLE PROJECTILE

131  DF  GOLF {23}
219  DF  .~ Practice swingable implement or indicator associated with swingable implement {4}
226  DF  .~.~ Device attachable to or integral with swingable implement {6}
231  DF  .~.~.~ Adjustable swingable implement, or swing or position indicator {6}
233.~.~.~.~ Swing speed indicator {1}
234  DF  .~.~.~.~.~> Audible

DEFINITION

Classification: 473/233

Swing speed indicator:

(under subclass 231) Subject matter wherein the structure is to provide the player with information concerning the velocity with which the first or second instrument is swung.

(1) Note. This is the proper location for the combination of an accelerometer type device with a club.